

@media screen and (min-width:320px) {
    .content{
        padding:50px 0 0;
        background: #f6fdff;
    }
    .pro-title{
        width: 350px;
        margin:0 auto;
        margin-bottom: 50px;
        text-align: center;
    }
    .pro-content{
        width: 92%;
        margin:0 auto;
    }
    .pro-box{
          position: relative; 
          margin-bottom: 40px;
          background: #fff;
          overflow: hidden;
    }
    .pro-box .pro-img{
        width: 100%;
        margin:0 auto;
        height: 160px;
        position: relative;
        z-index: 1;
        overflow: hidden;
    }
    .pro-img img{
        width: 100%;
        height: 160px;
    }
    .pro-txt{
        width: 100%;
      padding:20px 10px;
    }
    .pro-box:nth-child(2n) .pro-img,.pro-box:nth-child(2n) .pro-txt  {
        /* float: left; */
    }
    .pro-box:nth-child(2n + 1) .pro-img,.pro-box:nth-child(2n + 1) .pro-txt  {
        /* float: right; */
    }
    .pro-txt span{
        font-size: 16px;
        font-weight: bold;
        color:#333;
        position: relative;
        display: block;
        margin-bottom:20px;
    }
    .pro-txt span::after{
        content:'';
        width: 50px;
        height: 1px;
        position: absolute;
        top:18px;
        left: 0;
        background: #40c29e;
    }
    .pro-txt>div{
        font-size: 12px;
        color:#666;
        line-height: 16px;
    }
    .pro-footer{
        padding:50px 0;
        background: #edfbff;
    }
    .pro-desc{
        width: 80%;
        margin:10px auto;
        text-align: center;
    }
    .pro-btn{
        width: 80px;
        margin: 0 auto;
        height: 26px;
        line-height: 26px;
        border-radius: 13px;
        text-align: center;
        background: #40c29e;
        color:#fff;
        font-size: 12px;
        margin-top: 25px;
        cursor: pointer;
        overflow: hidden;
    }

}
@media screen and (min-width:992px) {
    .content{
        padding:60px 0 0;
        background: #f6fdff;
    }
    .pro-title{
        width: 400px;
        margin:0 auto;
        margin-bottom: 60px;
        text-align: center;
    }
    .pro-content{
        width: 720px;
        margin:0 auto;
    }
    .pro-box{
          position: relative; 
          margin-bottom: 50px;
          background: #fff;
          overflow: hidden;
    }
    .pro-box .pro-img{
        width: 50%;
        height: 260px;
        position: relative;
        z-index: 1;
        overflow: hidden;
    }
    .pro-img img{
        width: 600px;
        height: 260px;
    }
    .pro-txt{
        width: 50%;
      padding:30px 20px;
    }
    .pro-box:nth-child(2n) .pro-img,.pro-box:nth-child(2n) .pro-txt  {
        float: left;
    }
    .pro-box:nth-child(2n + 1) .pro-img,.pro-box:nth-child(2n + 1) .pro-txt  {
        float: right;
    }
    .pro-txt span{
        font-size: 16px;
        font-weight: bold;
        color:#333;
        position: relative;
        display: block;
        margin-bottom:30px;
    }
    .pro-txt span::after{
        content:'';
        width: 60px;
        height: 1px;
        position: absolute;
        top:26px;
        left: 0;
        background: #40c29e;
    }
    .pro-txt>div{
        font-size: 12px;
        color:#666;
        line-height: 20px;
    }
    .pro-footer{
        padding:60px 0;
        background: #edfbff;
    }
    .pro-desc{
        width: 600px;
        margin:12px auto;
        text-align: center;
    }
    .pro-btn{
        width: 72px;
        margin: 0 auto;
        height: 30px;
        line-height: 30px;
        border-radius: 15px;
        text-align: center;
        background: #40c29e;
        color:#fff;
        font-size: 12px;
        margin-top: 30px;
        cursor: pointer;
        overflow: hidden;
    }
}
@media screen and (min-width:1200px) {
    .content{
        padding:100px 0 0;
        background: #f6fdff;
    }
    .pro-title{
        width: 700px;
        margin:0 auto;
        margin-bottom: 100px;
        text-align: center;
    }
    .pro-content{
        width: 1200px;
        margin:0 auto;
    }
    .pro-box{
          position: relative; 
          margin-bottom: 85px;
          background: #fff;
          overflow: hidden;
    }
    .pro-box .pro-img{
        width: 50%;
        height: 316px;
        position: relative;
        z-index: 1;
        overflow: hidden;
    }
    .pro-img img{
        width: 600px;
        height: 325px;
    }
    .pro-txt{
        width: 50%;
      padding:55px 30px;
    }
    .pro-box:nth-child(2n) .pro-img,.pro-box:nth-child(2n) .pro-txt  {
        float: left;
    }
    .pro-box:nth-child(2n + 1) .pro-img,.pro-box:nth-child(2n + 1) .pro-txt  {
        float: right;
    }
    .pro-txt span{
        font-size: 24px;
        font-weight: bold;
        color:#333;
        position: relative;
        display: block;
        margin-bottom:45px;
    }
    .pro-txt span::after{
        content:'';
        width: 100px;
        height: 2px;
        position: absolute;
        top:35px;
        left: 0;
        background: #40c29e;
    }
    .pro-txt>div{
        font-size: 14px;
        color:#666;
        line-height: 28px;
    }
    .pro-footer{
        padding:100px 0;
        background: #edfbff;
    }
    .pro-desc{
        width: 1000px;
        margin:20px auto;
        text-align: center;
    }
    .pro-btn{
        width: 160px;
        margin: 0 auto;
        height: 50px;
        line-height: 50px;
        border-radius: 25px;
        text-align: center;
        background: #40c29e;
        color:#fff;
        font-size: 14px;
        margin-top: 50px;
        cursor: pointer;
        overflow: hidden;
    }
}
.footer{
    position: relative;
}